Apparatus for pulping



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G. W. ROBERTS. APPARATUS PoR PULPI'NG.

(No Model.)

No. 571,019. Patented NOV.` 10, 1896.

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W/ TNE SSE S UNITED STATES PATENT OEEICE.

CHARLES W'. ROBERTS, NORTH BENNINGTON, VERMONT, ASSIGNOR TO THE ROBERTSGRINDER COMPANY, OF 'BENNINGTON, VERMONT.

APPARATUS FOR PU LPING.

SPECIFICATION forming part of Letters Patent No. 571,019, dated November10, 1896.

Application nea August 17,1895, seralirasaeoi. cromati To all whom t mayconcern:

Be it known that I, CHARLES IV. ROBERTS, a

resident of North Bennington, Bennington county, State of Vermont, haveinvented certain new and useful Improvements in Apparatus for Pnlping,of which the following is a specification.

My invention relates more especially to an apparatus for pulping, andhas for its ob- Io ject to produce an improved apparatus for pulping.

To this end my invention is embodied in the apparatus for pulpinghereinafter set forth and claimed.

My invention will be understood by reference to the accompanyingdrawings, in which- Figure l is a side elevation, partly in section, ofa pulping-machine embodying my invention. Fig. 2 is a plan view thereof,and Fig. 3 is an end elevation designed more especially to show themounting of the reciprocating pockets. Fig. 4 represents a longitudinalvertical section of the principal operative parts of saidpulping-machine, said figure being on an enlarged scale.

In order to make the principle and mode of operation of my machineentirely clear, I will first have brief reference to Fig. 4 of thedrawings. In this view Gr represents the stone or other suitableabrading device, and H a traverse-table apertured at g, the stoneprojecting through said aperture. B and A are pockets in which wood iscontained. This wood is pressed continuously toward the table II by theplungers or pistons E, which are -impelled forward by thehydraulic-cylinder mechanism C D or in any other suitable manner. Thesepistons are provided with pawls h, which engage with the racks a to holdthe pistons in their advanced positions when the pressure on the pistonsis relieved. Mounted upon the table or at some place adjacent thereto isa hydraulic cylinder or other motor M, whose piston-rod N connects withthe pockets B A. This cylinder M serves to'move the pockets along thetraverse-table H back and forth tangentially across the stone,preferably in a plane parallel to and coinciding 5o with the plane ofrotation of the stone.

It will be observed that the walls of the pockets are recessed orcutaway to allow for the passage of the stone. y

From the foregoing description the operation will be readily apparent.It is as follows: The stone being in rotation and the pockets chargedwith wood, the grain running transversely across the stone, the pistonsE press the wood downward on the table and the lpiston N causes thepockets to be 6o moved back and forth across the stone. As the pocket Bis brought up to the stone the stone will commence to grind the woodtherein, and as the l pocket is pressed forward as the stone grinds,successive portions of the wood in the pocket will be brought in contactwith the stone, so that the stone will make a grind of a certain depthacross the pocket, the same action occurring as the pocket A is broughtacross the stone, When 7o the pockets are drawn back across the stone totheir initial positions, the action is repeated, so that by continuallymoving the pockets back and forth and feeding the wood forward in thepockets the wood is fed to the stone from two directions simultaneously;that is to say, horizontally and vertically. It will be observed thatthe stone acts on only a small portion of the wood at a time in makingthis planer grind, the advantage of which 8o will be apparent. n

Having described the principle and elements of my machine, I will nowproceed to describe the machine in detail, having reference to Figs. 1,2, and 3. In these figures A and B are the pockets for the wood, whichis placed with the grain running across the stone at an angle to thedirection of rotation, provided with the usual power-cylinders and withpistons for each pocket. The pockets 9o are carried vupon brackets F F,which are provided with rollers c c, which take under flanges t' i,which constitute the edges of the traverse-table and serve asantifriction-rollers to enable the pockets to be traversed across theface of the stone with as little friction as possible. G is the stonewhich projects through an opening gin the traverse-table Il. Thistraverse-,table is provided with a nose h and with depending slottedlugs j and Ioo perforated lugs lo. J is the base of the machine, whichis provided with a bearing K for the shaft of the stone G and withupwardly-proj ecting standards Z, through which pass bolts m. The boltsm also pass through the slots n in the lugs j of the table and assist inholding the table in its adjusted positions.

Mounted in the base J and passing through the lugs 7e of the table areadj listing-screws L. These adjusting-screws serve to adjust the tableup and down to regulate the grind of the stone, for it will be obviousthat by projecting the stone to a greater or less distance through thetable the depth and direction lof the grin-ds may be regulated.

Mounted upon the table II is the powercylinder M, whose piston N isconnected to the pocket A, which is connected to the pocket B, so thatboth pockets are lmoved back and forth. over the table H and the face ofthe stone by the movement of the piston N in its cylinder M. Byreferring to the plan view, Iiig. 2, it will be noted that the table Hisperforated, as at 71, 71.', for the passage of pulp.

Now while I have specifically described an apparatus for pulpingembodying my invention, I would have it understood that I do not 'meanto thereby limit myself to what is described, as the same may be variedwithin reasonable limits without departing from the spirit of myinvention.

Vhat I claim, and desire to secure by Letters Patent, is-

l. In a pulping organism, the combination of the following cooperatingelemental devices in cooperative relation, to wit: a movingpulping-agent, a stationary table, through which the pulping agentextends, a pocket, means for continuously pressing pulpable materialthrough the pocket and against the table and 'against the pulping agent,and means l for simultaneously moving the pocket across the pulping`agent substantially in the plan-e of movement of the said pulping agentuntil the material in the said pocket `is clear of the pulping agent andin contact -with the table, as specified. l

2. In a pulping apparatus, thecombination of a pulping-stone, atraverse-table apertured for the passage of the stone therethrough, apocket sliding upon the traversetable `and provided with a `piston forpressing the wood 'forward in the pocket, the said pocket being alsoprovided with brackets and rollers carried in the brackets, the lsaidrollers bearing beneath the edge of the traverse-table so as to hold the-pulpable material against the Atraverse-table, together with means fortraversing the pockets over the table.

8. The combination of a pulping-stone, a

traverse-table apertured for the passage of the stone, pockets carriedupon the traversetable and provided with brackets and rollers saidpockets being also recessed for the passage of the stone, and means fortraversing the pockets over the table and for continuously pressing thecontents of the pocket against the table and against the pulping agentas specified.

4. The combination with a pulping-stone, of a traverse-table aperturedfor the passage of the stone, a base J supporting the table,

` slotted lugs j Z on the table and base, said lugs c'operating withbolts m passing therethrough, a lug or lugs la and an adjustingscrew t'interyening between the base and table, whereby the table may beadjusted with respect to the stone, a pocket carried upon thetraverse-table and means for traversing the pocket over the table `andalso over the pulping agent and means for continuously feeding thecontents of the pocket, as specied.

5. The combination with a pulping-stone, of a traverse-table apertured.for the passage of the stone, a base J supporting the table, slottedlugs j Z on the table and base, said lugs coperating with bolts mpassing therethrough, a lug or lugsk and an adjustingscrew i interveningbetween the base and table, whereby -the table may be `adjusted withrespect to the stone, a pocket carried upon the traverse-table andprovided with means for holding th-e sam-e down to the said table andwith a piston for pressing the pulpable material .through the pocket,together with -a power-cylinder M and piston N enterpocket whereby thepocket may be traversed over the traverse-table, substantially asdescribed. n Y

6. The following elements combined together substantially as shovv'n anddescribed, to Wit: a stone, an vapertured traverse-table, together withmeans for adjusting the traverse-table to and from the stone, a pocketcarried upon the traverse-table and provided with rollers engaging withthe side of the table opposite to the side upon which the pocket iscarried, ltogether with means in the pocket for continuously pressing`the Wood forward in the pocket and with means for reciprocating thepocket entire across the stone so as to free the wood from contact withthe stone in order that a fresh planer-grind may be taken at eachYvibration.

- CHARLES XV. ROBERTS.

Witnesses:

WILLIAM J. F-UncK, Jr., JEROME GULLORD.

engaging beneath the edge of the table, thev `ing the power-cylinder andconnected to the IOO IIO

